Pug-mill.



No. 797,636. PATENTBD AUG. 22, 1905. v H. N. TENNILLE.

' PUGYMILL.

APPLIGATIOH FILED 0012.13, 1904.

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Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed October 13, 1904. $erial No. 223,346.

To aZZ whom, it may concern:

Be it known that I, HARRY N. TENNILLE, a citizen of the United States,residing at Manchester, in the county of Chesterfield and State ofVirginia, have invented certain new and useful Improvements inPug-Mills, of which the following is a specification.

This invention has for its object to improve the general construction ofmills designed for working or tempering clay and like material requiredto be treated so as to cause the particles to adhere and render the masssusceptible to being molded or fashioned into the required shape.

The invention relates to the type of clay or pug mills employingatraveling wheel adapted to operate in a trough or pit into which theclay or other material to be worked is placed. In accordance with thisinvention a large wheel is arranged above the pit, trough, or mortar andis mounted upon rollers and supported at its center from a roof therafters or braces of which outwardly and downwardly incline and areconnected by tie-rods, said wheel having a groove in its periphery toreceive the belt or cable by means of which power is imparted thereto.The traveling wheel is connected to the elevated wheel and rotatestherewith.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result reference is to be had to the following descriptionand drawings hereto attached.

While the essential and characteristic features of the invention aresusceptible of modification, still the preferred embodiment of theinvention is illustrated in the accompanying drawings, in which Figure 1is a side elevation of a pug-mill embodying the invention. Fig. 2 is atop plan view thereof. Fig. 3 is a detail view of the upper portion of apost, showing the manner of connecting the roller thereto andillustrating an edge portion of the drive-wheel in section. Fig. 4 is adetail view of the means for supporting the hub or central portion ofthe drive-wheel.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

The pit, mortar, or cavity for receiving the clay or other material tobe worked is indicated at 1 and may be of any construction. A series ofposts 2 are arranged about the pitin a circle and are provided neartheir upper ends with brackets 3 and rollers or wheels 4, the latterforming rotary supports for the peripheral portion of the drive-whcel 5,which is located above the pit at any determinate elevation. The posts 2are connected at their upper ends by means of a roof structurecomprising braces or rafters 6 and ties 7, the latter being connected attheir ends to the outer extremities of the braces or rafters 6 in anysubstantial manner. A red 8 is pendent from the center of the roofstructure and is provided at its lower end with a head 9, whichunderlaps the ties 7 and supports the same at a central point.

The drive-wheel 5 may be of any construction, and its rim is grooved toreceive the cable or drive-belt 10, by means of which power is impartedthereto. The drive-wheel is supported at its outer edge upon the wheels4 and at its center by means of the rod *8 and parts 6 and 7 of the roofstructure. The spokes 11 of the drive-wheel have their inner endstenoned and secured between plates 12 and 13, forming parts of the hub.A hanger comprising the base 1 1 and journal 15 is bolted or otherwiseattached to the ties 7 at a central point, the base being hollow toclear the head 9 at the lower end of the rod 8. The journal 15 passesthrough the hub and receives a washer 16 and nut 17. Lateraldisplacement of the drive-wheel is prevented by reason of its pivotalconnection with the roof structure, and vertical displacement isprevented by the rotary supports 1. The traveling wheel 18, by means ofwhich the clay or material is kneaded, worked, or tempered, is journaledupon an arm 19, which is connected at its inner end with a centralsupport 20 of the pit or mortar and at its outer end with thedrive-wheel by meansof the post 21 and link 22, the latter beingpivotally connected to a braced hanger 23, pendent from the drive-wheela distance in advance of the post 21. Obviously the traveling wheel 18may be connected to the drive-wheel in any manner so as to rotatetherewith and adapt itself to the bulk of material in the pit or mortarto be worked. A counter-shaft 2 1 is located a short distance from themill and is provided with a grooved pulley 25 and band-pulley 26, thelatter being connected to a suitable source of power by means of thedrive-belt 27. The cable or drive-belt 10 passes around the pulley 25and over guide-pulleys 28, as indicated most clearly in Fig. 2.

The construction is such as to admit of a clay-mill of the typeaforesaid being operated by means of an engine located a distance fromthe mill without the power-translating means interfering in the leastwith free access to the mill at every point. The drive-wheel 5 beingelevated is out of the way, and both it and the drive-cable are notliable to have the material lodge thereon or to impede the work ofsupplying the mill with material and removing the same from the millafter being operated upon.

Having thus described the invention, What is claimed as new is 1. In amill of the type described, the combination of a pit or mortar, adrive-Wheel elevated above the mortar, a pendent rod supporting thedrive-wheel at a central point, rotary supports for sustaining theperipheral portion of the drive-wheel, a device for working thematerial, and means connecting the material-working device with thedrive-wh eel, substantially as described.

2. In combination, a pit or mortar, a roof structure arranged above themortar and comprising braces and ties, a drive-wheel, means connectingthe upper ends of the brace with the central portion of the ties andsupporting the central portion of the drive-wheel at its lower end,rotary supports for sustaining the peripheral portion of thedrive-wheel, and a material-working device connected to and rotatablewith the drive-wheel, substantially as set forth.

3. In combination, a roof structure comprising braces and ties, acentrally-disposed rod connecting the upper inner ends of the braces tothe central portion of the ties, a hanger attached to the tiesand-comprising a journal, a drive-wheel mounted upon the journal of thehanger, means for imparting movement to the drive-wheel, and a devicefor working the material attached to the drive-wheel for rotationtherewith, substantially as set forth.

4. In combination, amortar, posts arranged about the mortar, a roofstructure connecting the upper ends of the posts comprising braces andties, a rod connecting the upper ends of the braces with the centralportion of the ties, a hanger attached to said ties, a drive-wheelmounted upon the hanger, rotary supports attached to the posts neartheir upper ends for sustaining the outer portion of the drivewheel,atraveling wheel, means connecting the traveling Wheel with thedrive-wheel, and a drive-cable for imparting movement to thedrive-Wheel, substantially as specified.

In testimony whereof I aflix my signature in presence of two Witnesses.

HARRY N. TENNILLE.

Witnesses:

J. R. GRUN, J (J. HALL.

